Integral base for a drinking glass



FIG. 1 is a perspective view of my integral base for a drinking glass;

FIG. 2 is a side view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an integral base for a drinking glass, as shown and described. 